1. Size: The pet bumper is based on your dog's neck size, not their collar. 2. Peace of mind: Your pet can now go to the bathroom independently without sneaking through your yard fence or staying safely on the balcony of your high-rise apartment because he wears his comfy, lightweight pet bumper plush collar. 3. Free for your pet: Instead of costly modifications to your fence or keeping your pet on a leash in the yard or patio, the pet bumper fill dog collar lets your puppy run, jump, play, and explore! Your pet will enjoy the freedom. 4. Safe and comfortable: machine washable. Made of 100% cotton material filled with polyester fiber, the original pet bumper has a ribbon loop inside the neck hole that allows the pet bumper to connect to the collar (collar not included) to prevent it from being pushed over the dog's head.